Spice it up

Just got told that my sex is boring by my boyfriend but I’m pregnant. The other night I was doing it at how the speed I always do and he made the comment “I don’t like this it’s too rough”. I was caught off guard because I was doing it how I always do sane pace. Then last night I was giving him head and he wasn’t getting or staying hard. I kept asking him what’s wrong? So he finally said it’s just boring...and I kept asking what do you want me to do and he just kept looking at me. So I finally just gave up. He’s never complained. I didn’t think any guy would complain as long as he’s getting it done. But I guess I was wrong. Then after a while I just started watching tv and we still ended up having sex and he stayed hard. So I’m trying to figure out what was the problem? It made me feel bad because I’ve never had that happen before not even with him. It makes me wonder ALOT of things.